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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Small Minnow Mayflies (Baetidae) » Baetis » Baetis tricaudatus
Photo#618190
Large Baetis like subimago - Baetis tricaudatus - female
Copyright © 2012 Colin (Sandy) Pittendrigh

Large Baetis like subimago - Baetis tricaudatus - Female
Three Forks (of the Missouri), Three Forks County, Montana, USA
March 5, 2012
Size: 3/8" or 1cm
Found this one on Darlington Spring Ditch, next to the lower Madison River in Montana. It looks like a Baetis of some kind. But I've never seen one this big before. The high-arching thorax, with black top, is interesting too. This is probably a female. But what genus? What species?
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Contributed by Colin (Sandy) Pittendrigh on 5 March, 2012 - 5:44am
Last updated 11 March, 2012 - 3:55am

Moved
Moved from Mayflies.
… Roger Rohrbeck, 11 March, 2012 - 3:55am login or register to post comments

Baetis tricaudatus
Hi Sandy-

I believe this Baetid female subimago to be Baetis tricaudatus.
… Roger Rohrbeck, 11 March, 2012 - 3:52am login or register to post comments

Moved for expert attention
Moved from ID Request.
… Chris Mallory, 9 March, 2012 - 5:22pm login or register to post comments

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